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Corrosion of steel in reinforced concrete bridges is a major concern for the structural integrity, long-term durability, and maintenance of the highway infrastructure. Statistics from a national study in 2002 indicated that approximately 15% of the national bridge inventory is structurally deficient because of corrosion and the national annual direct cost exceeded $8 billion.1 In the state of Florida, the typical design life expectation for the >6,000 bridges in the state highway infrastructure exceed 75 years.
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Redline versions of standards show the changes to the current edition of the standard since the last edition. Changes are shown in underline and strikeout. With the Redline, users will be able to quickly identify additions and deletions from the previous version.
Inspection of Lining Application in Steel and Concrete Equipment. Redline version - changes since last edition are shown in underline or strikeout.
Venda Calidad, No Precio consiste en ser selectivo con respecto a la manera de administrar su negocio como contratista de pintura. Implementando una fórmula comercial válida, usted puede incrementar el precio y generar mayores ganancias por cada trabajo.
The benefits of concrete floor polishing include creation of a durable finish with modest maintenance requirements and compliance with principals of green construction. At the same time, however, there must be rigorous adherence to proper procedures in the creation of a concrete polished finish. The presentation describes the benefits of polished concrete and explains what can go wrong and why it sometimes happens.
HISTORICAL DOCUMENT. This NACE Standard Recommended Practice was prepared by NACE Task Group T-6-2. This Standard is intended to update NACE Publication 6F166, "Recommended Practices for Inspecitons of Linings on Steel, which was prepared by Task Group T-6F-3 in July, 1966. This Standard addresses steps required for inspecting a lining on steel or concrete.
Concrete repair is a neglected primary example of sustainable construction and green building practices. Sustainability in construction is a topic of increasing importance. Concrete has high embodied energy and much documentation exists about the sustainable nature of concrete in new construction. Concrete maintenance, protection, and repair are the ultimate acts of sustainability in construction because they preserve this embodied energy. Rating systems should be adopted to better capture the sustainable nature of concrete preservation
Application of sour linepipes has expanded toward severe sour environment regions including higher H2S partial pressure conditions. In 2013, actual sour gas pipeline failure occurred due to SSC (Newbury et al., 2018). One of the possible root cause of SSC was assumed to be a formation of hard spots in asurface region of steel. Fairchild et al. investigated and proposed three hard zone formation mechanisms including carbon contamination, dual phase microstructure and heat transfer variation in a recent paper (Fairchild et al., 2019; Newbury et al., 2019).
The author will present on the various generic coatings technologies available for lining concrete and discuss the advantages and disadvantages of each one. Discussion will include epoxy, polyurethane and polyurea technologies. The goal of the presentation will be to provide some guidance to the attendees on when is the right application to select each technology as part of a specification.
Conference Paper - This paper describes the requirements of the standard, additional inspection points, and several uses of the standard in the field where clear specification language was imperative to successful project completion. NACE 5/SSPC-SP 12 standard confined to water jetting - which makes use of ultra-high pressure water that is nonabrasive. Four levels of visible post-cleaning condition and three levels of non-visible condition are defined.